Description:The ISL6313B two-phase PWM control IC provides a precision voltage regulation system for advanced microprocessors. The integration of power MOSFET drivers into the controller IC marks a departure from the separate PWM controller and driver configuration of previous multi-phase product families. By reducing the number of external parts, this integration is optimized for a cost and space saving power management solution. One outstanding feature of this controller IC is its multiprocessor compatibility, allowi
The recommended PCB layout for the ISL6313BCRZ involves placing the input capacitors close to the VIN pin, using a solid ground plane, and keeping the high-frequency switching nodes (e.g., LX, VOUT) away from sensitive analog nodes. A 4-layer PCB with a dedicated power plane and a solid ground plane is recommended.
To select the right inductor for the ISL6313BCRZ, consider the following factors: inductance value, DC resistance, saturation current, and physical size. A good starting point is to use an inductor with an inductance value between 1µH to 10µH, a DC resistance less than 1Ω, and a saturation current greater than the peak current of the converter.
The ISL6313BCRZ can operate in an ambient temperature range of -40°C to +85°C. However, the maximum junction temperature (TJ) should not exceed 125°C. It's essential to ensure proper thermal design and heat dissipation to prevent overheating.
The soft-start function of the ISL6313BCRZ can be configured by selecting the appropriate soft-start capacitor (CSS) value. A larger CSS value will result in a slower soft-start time, while a smaller value will result in a faster soft-start time. The recommended CSS value range is 10nF to 100nF.
The recommended input capacitor type for the ISL6313BCRZ is a low-ESR ceramic capacitor or a polymer capacitor. The recommended input capacitor value is 10µF to 22µF, with a voltage rating greater than the maximum input voltage.
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ISL6313BCRZ Overview
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